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Length: 16" Material: 4150 Chrome Moly Steel Contour: Heavy Barrel Chamber: 300 AAC BlackOut Gas Port Size: 0.125" (will cycle some subsonic ammo with out suppressor) Twist Rate: 1 in 7" Finish: Black Nitride (Melonite) inside and out M4 Feed Ramps: Yes Muzzle Thread Pattern: 5/8" x 24 Gas Port Location: Carbine Exterior Diameter at Gas Port: 0.750" Manufactured by White River Armory Made in the USA from White River Armory (Product AR-300-HB 1:7)

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